Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Reexamination Certificate
2007-07-05
2010-11-09
Chou, Albert T (Department: 2471)
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
C709S240000
Reexamination Certificate
active
07830911
ABSTRACT:
A determining unit determines whether a second bit string that forms an Internet Protocol Version 4 (IPv4) address is included in a first bit string that forms an address for Internet Protocol Version 6 (IPv6) connection, and further determines whether the address for IPv6 connection is an extended address extended to an address length of an IPv6 address by adding a prior determined bit to the IPv4 address, when the second bit string is determined to be included in the first bit string. A changing unit changes a priority of the address for IPv6 connection that is determined as the extended IPv6 address. A selecting unit selects preferentially a high level address for IPv6 connection during establishing connection with an external communication apparatus.
REFERENCES:
patent: 2004/0240468 (2004-12-01), Chin et al.
patent: 2006/0233175 (2006-10-01), Ge et al.
Draves, Default Address Selection for Internet Protocol Version 6, (IPv6); IETF RFC 3484; Feb. 2003.
Fujisaki, et al, Distributing Default Address Selection Policy Using DHCPv6; IETF Internet Draft, Jun. 2005.
Srisuresh, et al, DNS Extensions to Network Address Translators (DNS-ALG); IETF RFC 2694; Sep. 1999.
Chou Albert T
Kabushiki Kaisha Toshiba
Turocy & Watson LLP
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